domain.h

#ifndef foodomainhfoo#define foodomainhfoo/* $Id: domain.h 1168 2006-03-02 01:28:03Z lennart $ *//*** This file is part of avahi. avahi is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. avahi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with avahi; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.***//** \file domain.h Domain name handling functions */#include <inttypes.h>#include <sys/types.h>#include <avahi-common/cdecl.h>AVAHI_C_DECL_BEGIN/** The maximum length of a a fully escaped domain name C string. This * is calculated like this: RFC1034 mandates maximum length of FQDNs * is 255. The maximum label length is 63. To minimize the number of * (non-escaped) dots, we comprise our maximum-length domain name of * four labels á 63 characters plus three inner dots. Escaping the * four labels quadruples their length at maximum. An escaped domain * name has the therefore the maximum length of 63*4*4+3=1011. A * trailing NUL and perhaps two unnecessary dots leading and trailing * the string brings us to 1014. */00043#define AVAHI_DOMAIN_NAME_MAX 1014/** Maximum size of an unescaped label */00046#define AVAHI_LABEL_MAX 64/** Normalize a domain name into canonical form. This drops trailing * dots and removes useless backslash escapes. */char *avahi_normalize_name(constchar *s, char *ret_s, size_t size);
/** Normalize a domain name into canonical form. This drops trailing * dots and removes useless backslash escapes. avahi_free() the * result! */char *avahi_normalize_name_strdup(constchar *s);
/** Return 1 when the specified domain names are equal, 0 otherwise */int avahi_domain_equal(constchar *a, constchar *b);
/** Read the first label from the textual domain name *name, unescape * it and write it to dest, *name is changed to point to the next label*/char *avahi_unescape_label(constchar **name, char *dest, size_t size);
/** Escape the domain name in *src and write it to *ret_name */char *avahi_escape_label(constchar* src, size_t src_length, char **ret_name, size_t *ret_size);
/** Return a pointer to the type section of a subtype i.e. _foo._sub._bar._tcp => _bar._tcp */constchar *avahi_get_type_from_subtype(constchar *t);
/** Return 1 when the specified string contains a valid generic * service type (i.e. a series of words starting with "_"), 0 * otherwise */int avahi_is_valid_service_type_generic(constchar *t);
/** Return 1 when the specified string contains a valid strict service * type (i.e. consisting of only two words, the latter being either * _udp or _tcp), 0 otherwise */int avahi_is_valid_service_type_strict(constchar *t);
/** Return 1 when the specified string contains a valid service subtype, 0 otherwise */int avahi_is_valid_service_subtype(constchar *t);
/** Return 1 when the specified string contains a valid domain name, 0 otherwise */int avahi_is_valid_domain_name(constchar *t);
/** Return 1 when the specified string contains a valid service name, 0 otherwise */int avahi_is_valid_service_name(constchar *t);
/** Return 1 when the specified string contains a valid non-FQDN host name (i.e. without dots), 0 otherwise */int avahi_is_valid_host_name(constchar *t);
/** Return 1 when the specified string contains a valid FQDN host name (i.e. with more than one label and non-numerical), 0 otherwise. \since 0.6.9 */int avahi_is_valid_fqdn(constchar *t);
/** Return some kind of hash value for the domain, useful for using domains as hash table keys. */unsigned avahi_domain_hash(constchar *name);
/** Construct a valid complete service name from a name, a type and a domain */int avahi_service_name_join(char *p, size_t size, constchar *name, constchar *type, constchar *domain);
/** Split a full service name into name, type and domain */int avahi_service_name_split(constchar *p, char *name, size_t name_size, char *type, size_t type_size, char *domain, size_t domain_size);
AVAHI_C_DECL_END#endif